/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.segment.indexing;

import org.apache.druid.data.input.impl.AggregateProjectionSpec;
import org.apache.druid.data.input.impl.DimensionsSpec;
import org.apache.druid.data.input.impl.TimestampSpec;
import org.apache.druid.indexer.granularity.GranularitySpec;
import org.apache.druid.query.aggregation.AggregatorFactory;
import org.apache.druid.segment.transform.TransformSpec;

import javax.annotation.Nullable;
import java.util.List;
import java.util.Set;

/**
 * Class representing the combined DataSchema of a set of segments, currently used only by Compaction.
 */
public class CombinedDataSchema extends DataSchema
{
  private final Set<String> multiValuedDimensions;

  public CombinedDataSchema(
      String dataSource,
      @Nullable TimestampSpec timestampSpec,
      @Nullable DimensionsSpec dimensionsSpec,
      AggregatorFactory[] aggregators,
      GranularitySpec granularitySpec,
      TransformSpec transformSpec,
      @Nullable List<AggregateProjectionSpec> projections,
      @Nullable Set<String> multiValuedDimensions
  )
  {
    super(
        dataSource,
        timestampSpec,
        dimensionsSpec,
        aggregators,
        granularitySpec,
        transformSpec,
        projections,
        null,
        null
    );
    this.multiValuedDimensions = multiValuedDimensions;
  }

  @Nullable
  public Set<String> getMultiValuedDimensions()
  {
    return multiValuedDimensions;
  }

}
